﻿// Copyright 2009 Mike Geise
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

namespace Falcon.Core.Services
{
	using System.Collections.Generic;
	using System.Globalization;
	using Falcon.Core.Domain;
	using Falcon.Core.Domain.Repositories;
	using Falcon.Core.Domain.Services;
	using Falcon.Core.Domain.Values;

	public class AttachmentStoreService : IAttachmentStoreService
	{
		/// <summary>
		/// Initializes a new instance of the <see cref="AttachmentStoreService"/> class.
		/// </summary>
		/// <param name="attachmentService">The attachment service.</param>
		/// <param name="attachmentStoreRepository">The attachment store repository.</param>
		public AttachmentStoreService(
			IAttachmentService attachmentService, 
			IAttachmentStoreRepository attachmentStoreRepository)
		{
			this.AttachmentService = attachmentService;
			this.AttachmentStoreRepository = attachmentStoreRepository;
		}

		/// <summary>
		/// Gets or sets the attachment service.
		/// </summary>
		/// <value>The attachment service.</value>
		public IAttachmentService AttachmentService
		{
			get;
			private set;
		}

		/// <summary>
		/// Gets or sets the attachment store repository.
		/// </summary>
		/// <value>The attachment store repository.</value>
		public IAttachmentStoreRepository AttachmentStoreRepository
		{
			get; 
			private set;
		}

		/// <summary>
		/// Gets all the pending attachment stores.
		/// </summary>
		/// <param name="specification">The specification.</param>
		/// <returns></returns>
		public IList<AttachmentStore> GetAll(AttachmentStoreSpecification specification)
		{
			return this.AttachmentStoreRepository.GetAll(specification);
		}

		/// <summary>
		/// Creates this attachment store.
		/// </summary>
		/// <returns></returns>
		public AttachmentStore Create()
		{
			return new AttachmentStore();
		}

		/// <summary>
		/// Processes the specified attachment stores.
		/// </summary>
		/// <param name="stores">The stores.</param>
		/// <param name="value">The value.</param>
		/// <returns></returns>
		public bool Process(IList<AttachmentStore> stores, AttachmentCreate value)
		{
			if (value.Source != null && value.Source.ContentLength > 0)
			{
				var attachment = this.AttachmentService.Create();

				this.AttachmentService.Insert(attachment, value);

				var store = this.Create();

				store.Group = value.Group;
				store.Key = value.TempId.ToString(CultureInfo.InvariantCulture);
				store.Attachment = attachment;

				this.Insert(store);

				stores.Add(store);

				return true;
			}

			return false;
		}

		/// <summary>
		/// Inserts the specified attachment store.
		/// </summary>
		/// <param name="store">The store.</param>
		public void Insert(AttachmentStore store)
		{
			this.AttachmentStoreRepository.Insert(store);
		}

		/// <summary>
		/// Deletes the specified attachment store.
		/// </summary>
		/// <param name="store">The store.</param>
		public void Delete(AttachmentStore store)
		{
			this.AttachmentStoreRepository.Delete(store);
		}

		/// <summary>
		/// Deletes the specified <see cref="AttachmentStore"/>.
		/// </summary>
		/// <param name="store">The store.</param>
		/// <param name="cascade">if set to <c>true</c> [cascade].</param>
		public void Delete(AttachmentStore store, bool cascade)
		{
			var attachment = store.Attachment;

			this.Delete(store);

			if (cascade)
			{
				this.AttachmentService.Delete(attachment);
			}
		}
	}
}